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4
PROCEDURES AND SETTINGS BEFORE SYSTEM
OPERATION
4.6 Offset/Gain Setting
4 - 12
1
OVERVIEW
2
SYSTEM
CONFIGURATION
3
SPECIFICATIONS
4
PROCEDURES AND
SETTINGS BEFORE
SYSTEM OPERATION
5
UTILITY PACKAGE
(GX CONFIGURATOR-TI)
6
PROGRAMMING
7
ONLINE MODULE
CHANGE
8
TROUBLESHOOTING
POINT
(1) Perform offset/gain setting in the actual operating status.
(2) Offset/gain values are stored in the Flash memory of the Q68RD3-G by
turning ON User range write request (YA). These values are not erased even
at power-off. To prevent unnecessary write to the Flash memory, an error
(error code: 162) occurs when values are written 26 times continuously.
(3) Set the offset/gain values within the range where the following conditions are
satisfied.
(Gain value) - (Offset value) > 0.1[ ]
Set the offset/gain temperature setting values within the range where the
following conditions are satisfied.
(Gain temperature setting value) - (Offset temperature setting value) > 0.1[ ]
(4) When User range write request (YA) is turned ON, consistency checks, for
offset value and gain value, and for offset temperature setting value and gain
temperature setting value, are executed.
If an error occurs on any channel, offset/gain values are not written to the
module.
Check the value in the Error code (Un\G19) and take a corrective action.
Then, perform offset/gain setting again.
(5) Offset/gain setting can be performed on multiple channels at the same time.
However, set the offset/gain channels separately.
If the offset/gain channels are set at the same time, an error (error code: 500)
occurs.
(6) It takes approximately 7 seconds before Channel change completion flag
(XB) turns ON after turning ON Channel change request (YB). During this
period, input to channels targeted for offset/gain setting must be constant.
In addition, if disconnection state is detected during this period, Channel
change completion flag (XB) turns ON earlier and an error (error code: 51 )
occurs at the same time. If this occurs, perform offset/gain setting again after
connection is restored.
(7) If an error (error code: 51 ) described at (6) occurs while performing offset/
gain setting simultaneously on multiple channels, values are not set only for
the disconnected channel but also normally-connected channels. Therefore,
perform offset/gain setting again for all adjusting target channels after
connection is restored.
(8) Module ready (X0) turns from OFF to ON when the offset/gain setting mode is
switched to the normal mode by the dedicated instruction (G(P).OFFGAN) or
the setting in the Mode switching setting (Un\G158 and Un\G159).
Note that initial setting processing will be executed if there is a sequence
program that performs initial settings when Module ready (X0) turns ON.